package zuoye10;

import java.util.HashSet;
import java.util.Random;
public class Test3 {
    public static void main(String[] args) {
        Random r = new Random();
        HashSet<Integer> ts = new HashSet<Integer>();
        while (ts.size() < 10) {
            int num = r.nextInt(40) + 1;
            ts.add(num);
        }
        for (Integer i : ts) {
            System.out.println(i);
        }
    }
}
